Examples

Sure, Ann Coulter has proven that being shrill and vapid is no serious barrier to success, but Coulter is at least sporadically witty and entertaining — she can turn a phrase, whether or not she uses it to say much of anything.

Locale: Staging and dressing together constitute locale and their absence will render it "vague" or "vapid" -- though a writer might, of course, pare away the requisite details deliberately, in the same way they might pare away features distinguishing voice.